*2.1. Data*

Hourly electrical power demand data for Bonneville, Oregon, USA, from 2 July 2015 to 19 September 2017 provided by the US Energy Information Administration [21] were used to test and validate the model. The original data set was a 1 × *n* matrix where *n* is the number of samples. After removing the matrix fields without reported values, a figure of the initial dataset was generated and presented in Figure 2.

**Figure 2.** Electrical power demand data for Bonneville, Oregon, USA, from 2 July 2015 to 19 September 2017.

A new data set (13 × (*n* − 30) matrix) was created where 30 is the biggest considered delay. 13 is related to the applied probable delays of 1, 2, 3, 4, 5, 6, 24, 25, 26, 27, 28, 29, and 30 for creating a dataset with 13 variables. To obtain the best combination of the variables, a new dataset was fed into the NSGAII as described in Section 2.2. Outlier detection techniques can be applied for detection and removal of outliers. An example of these techniques is given in [22].
